Series 5 ERECTA SWITCH
Choose Your Product
All products available in Polypropylene (PP), Acetal (AC), and Kynar PVDF (KR). No minimums. Ships Wednesdays.
Visual flow confirmation — alone or combined with electrical switching. The 5-18 provides visual-only indication; the 5-19 adds a reed switch output for dual-function operation.
All products available in Polypropylene (PP), Acetal (AC), and Kynar PVDF (KR). No minimums. Ships Wednesdays.
All Series 5 flow switches and indicators share these electrical and mechanical ratings.
| Specification | Value |
|---|---|
| Switch Type | Hermetically sealed reed switch (flow switches) / Visual piston indicator (5-18) |
| Contact Configuration | SPST N.O. — closes on flow |
| Contact Rating | 70 VA / 50W resistive |
| Inductive Loads | Require external arc suppression — solenoid and relay coils. Above the rating, isolate the load with a Series 50 relay. |
| Current | 0.5A AC / 0.7A DC |
| Voltage Max | 300 VAC / 350 VDC |
| Port Thread | 9/16-18 UNF (requires Series 5 accessory fittings) |
| Lead Wire | 24 in (600 mm) |
| Materials | Polypropylene (PP) · Acetal (AC) · Kynar PVDF (KR) |
| Compliance | RoHS |
| Pricing Tiers | 1–9 / 10–24 / 25–49 / 50–99 / 100–199 / 200–999 |
The Series 5 flow switch is used for pump start/stop control, high-level overflow protection, low-level dry-run protection, and tank or reservoir level alarms in OEM equipment. The modular ERECTA SWITCH system is built into laundry, HVAC, water-treatment, hydraulic, and chemical-handling machinery.
Choose the material to match the media: Polypropylene (PP) for general aqueous, acids, and bases; Acetal (AC/Delrin) for solvents, fuels, and hydrocarbons; Kynar PVDF (KR) for aggressive or harsh chemicals. Every ERECTA SWITCH model is offered in all three materials.
The Series 5 flow switch uses a magnetic reed switch wired in series with your relay or controller. Contact rating is 70 VA / 50 W resistive (UL File E70063). The switch ships with lead wires — connect directly to your control circuit.
No. The Series 5 flow switch is a mechanical float actuating a sealed reed switch — there is nothing to calibrate or power. This is a reliability advantage over electronic sensors that can drift over time.
Inspect that the float moves freely (check for debris or scaling), then test reed continuity with a multimeter. Because ERECTA SWITCH is modular, you replace only the individual component — switch, float, connector, or fitting — instead of the whole assembly.
Series 10 level switches are rated to 100 PSI; Series 5 flow switches to 200 PSI. Operating temperature depends on the housing material — Polypropylene, Acetal, and Kynar PVDF each have different thermal limits. Contact Compac engineering for your specific conditions.
